133 lines
5.3 KiB
PHP
133 lines
5.3 KiB
PHP
<?php
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/**
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* 前端：渲染混装产品的自定义 add-to-cart 表单、校验并加入购物车。
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*/
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defined('ABSPATH') || exit;
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class Yoone_Product_Bundles_Frontend {
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protected static $instance = null;
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public static function instance() {
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if (null === self::$instance) self::$instance = new self();
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return self::$instance;
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}
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private function __construct() {
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// 用我们的模板替换默认的 add-to-cart 按钮
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add_action('woocommerce_' . Yoone_Product_Bundles::TYPE . '_add_to_cart', array($this, 'render_add_to_cart')); // 显示表单
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// 处理加入购物车：校验数量并打包所选组件数据
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add_filter('woocommerce_add_to_cart_validation', array($this, 'validate_add_to_cart'), 10, 6);
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add_filter('woocommerce_add_cart_item_data', array($this, 'add_cart_item_data'), 10, 3);
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// 在购物车/订单中显示组件摘要
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add_filter('woocommerce_get_item_data', array($this, 'display_cart_item_data'), 10, 2);
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// 结算前动态调整价格
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add_action('woocommerce_before_calculate_totals', array($this, 'adjust_bundle_price'), 20, 1);
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}
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/**
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* 渲染自定义表单：按所选分类分组显示允许的简单商品，提供数量输入。
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*/
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public function render_add_to_cart() {
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wc_get_template('single-product/add-to-cart/yoone-bundle.php', array(), '', YOONE_PB_PATH . 'templates/');
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}
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/**
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* 校验：总选择数量 >= min_qty
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*/
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public function validate_add_to_cart($passed, $product_id, $quantity, $variation_id, $variations, $cart_item_data) {
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$product = wc_get_product($product_id);
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if (! $product || $product->get_type() !== Yoone_Product_Bundles::TYPE) return $passed;
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$config = Yoone_Product_Bundles::get_bundle_config($product);
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$min = max(0, absint($config['min_qty']));
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// 从 POST 中收集数量
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$selected = isset($_POST['yoone_bundle_components']) ? (array) $_POST['yoone_bundle_components'] : array();
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$total_qty = 0;
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foreach ($selected as $pid => $qty) {
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$qty = absint($qty);
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if ($qty > 0) $total_qty += $qty;
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}
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if ($total_qty < $min) {
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wc_add_notice(sprintf(__('请至少选择 %d 件混装组件后再加入购物车。', 'yoone-product-bundles'), $min), 'error');
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return false;
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}
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return $passed;
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}
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/**
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* 将所选组件数据存入购物车项。
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*/
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public function add_cart_item_data($cart_item_data, $product_id, $variation_id) {
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$product = wc_get_product($product_id);
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if (! $product || $product->get_type() !== Yoone_Product_Bundles::TYPE) return $cart_item_data;
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$selected = isset($_POST['yoone_bundle_components']) ? (array) $_POST['yoone_bundle_components'] : array();
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// 仅保留大于 0 的数量
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$components = array();
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foreach ($selected as $pid => $qty) {
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$pid = absint($pid);
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$qty = absint($qty);
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if ($pid && $qty > 0) $components[$pid] = $qty;
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}
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if (! empty($components)) {
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$cart_item_data['yoone_bundle_components'] = $components;
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}
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return $cart_item_data;
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}
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/**
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* 在购物车行项目中展示所选组件摘要。
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*/
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public function display_cart_item_data($item_data, $cart_item) {
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if (! empty($cart_item['yoone_bundle_components'])) {
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$lines = array();
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foreach ($cart_item['yoone_bundle_components'] as $pid => $qty) {
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$p = wc_get_product($pid);
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if ($p) {
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$lines[] = sprintf('%s × %d', $p->get_name(), $qty);
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}
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}
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if (! empty($lines)) {
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$item_data[] = array(
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'key' => __('混装内容', 'yoone-product-bundles'),
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'value' => implode("\n", $lines),
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'display' => implode('<br/>', array_map('esc_html', $lines)),
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);
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}
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}
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return $item_data;
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}
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/**
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* 结算前根据组件动态调整混装产品的行项目价格（= 所选简单商品单价 × 数量 的总和）。
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* 注意：这里使用的是产品当前价格（不含税的基础价），是否包含税由 WooCommerce 税设置决定。
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*/
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public function adjust_bundle_price($cart) {
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if (is_admin() && ! defined('DOING_AJAX')) {
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return; // 后台不处理
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}
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if (empty($cart) || ! method_exists($cart, 'get_cart')) return;
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foreach ($cart->get_cart() as $cart_item_key => $cart_item) {
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if (empty($cart_item['yoone_bundle_components'])) continue;
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$product = isset($cart_item['data']) ? $cart_item['data'] : null;
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if (! $product || ! is_a($product, 'WC_Product')) continue;
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if ($product->get_type() !== Yoone_Product_Bundles::TYPE) continue;
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$total = 0.0;
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foreach ($cart_item['yoone_bundle_components'] as $pid => $qty) {
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$p = wc_get_product($pid);
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if (! $p) continue;
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$unit = floatval($p->get_price()); // 基础价
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$total += $unit * absint($qty);
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}
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// 将产品行项目价格设为总价
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$product->set_price($total);
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}
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}
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} |